baber/WOPTO huggingface dataset:
Patent GB-1192359-A (GB)
Title: Improvements in or relating to Acrylic Resins
Inventor: ROBINSON PETER VERNON
IPC: C08F8/00
Filed: 1966-09-21
Abstract: 1,192,359. Preparation of acrylamide copolymers. STYRENE CO-POLYMERS Ltd. 7 Sept., 1967 [21 Sept., 1966], No. 42240/66. Heading C3P. A process for the preparation of thermosetting acrylamide copolymers comprises condensing acrylamide, or a polymerizable derivative thereof having at least one H atom directly attached to the N atom of the amide group, with an aliphatic mono-aldehyde having up to 8 C atoms (e.g. formaldehyde used in the form of paraformaldehyde) in the presence of one or more ethylenically unsaturated comonomers at a pH less than 6 but not less than 2À5, under conditions which inhibit polymerization reactions, and thereafter effecting copolymerization of the alkylolated acrylamide thus obtained with said comonomer(s), and effecting etherification of the alkylolated amide groups by means of an aliphatic alcohol having up to 8 C atoms (e.g. butanol) before, during or after the copolymerization reaction, the reaction conditions being such as to avoid gelation during the copolymerization reaction. The comonomers used preferably comprise a non-acidic comonomer, e.g. ethyl acrylate and/or styrene, and an acidic comonomer, e.g. maleic anhydride or monobutyl maleate; and a chain transfer agent, e.g. t-dodecyl mercaptan, may be present in the copolymerization reaction. Preferably, etherification of the alkylolamide groups is substantially completed before the copolymerization begins. Inhibition of polymerization during the alkylolation reaction is generally effected by inclusion of an inhibitor such as hydroquinone, benzoquinone, t-butyl catechol, p - methoxyphenol or 2,5 - di - t - butyl hydroquinone. In examples, copolymerization is effected with cumene hydroperoxide as initiator and in a xylene/butanol solvent. The copolymers obtained are useful for forming blends with epoxide resins.
Patent GB-1395197-A (GB)
Title: Stacking device for flat objects
IPC: B65H33/16
Filed: 1972-09-12
Abstract: 1395197 Stacking sheets PRINTEX 12 Sept 1972 [15 Sept 1971] 42291/72 Heading B8R Sheets 7, Fig. 1, are stacked on a normally stationary belt 1 between front and rear stops 2, 3, assisted by air blown downwards from a pipe 32. When a stack of a given number of counted sheets is formed, a jack 21 controlled by the counter causes through a pinion 20 and racks 16 the stop 2 to rise above the level of the top of the stack, and a freely rotatable cylinder to descend into contact with the top of the stack, while a motor 4 drives the belt 1 to remove the stack and also drives belts 29 on either side of the stack to frictionally rotate the cylinder 8 at a peripheral speed the same as the speed of the belt 1 so as to maintain the stack upright. The stop 2 and cylinder 8 are adjustable according to sheet length by a hand-wheel 24, pinion 23 and racks 19, 25. In another form, Fig. 3, further cylinders 8<SP>1</SP> are provided to engage the tops of a plurality of stacks spaced along the belt after passing the stop 2, the cylinders 8<SP>1</SP> being rotated by the cylinder 8 through a spring-tensioned belt 38, and being raised and lowered with the cylinder 8 through a spring-tensioned chain 40.
Patent GB-1321855-A (GB)
Title: Railway track tamping and aligning machine
IPC: E01B27/17
Filed: 1970-09-03
Abstract: 1321855 Railway track tamping and aligning machines CANRON LIMITED-CANRON LIMITEE 3 Sept 1970 [5 Sept 1969] 42313/70 Heading E1G In a railway track aligning machine wherein a slewing frame 17 overhanging a wheeled base frame 10 is pivoted thereto at 18 and actuated by a slewing jack 19, the frame 17 carries at its overhung end 30 rail clamps 24, Figure 2, and ballast-squeezing tamping heads 31, 32, so that during an aligning movement the tamping heads are moved laterally as they are squeezed together and thus assist in ensuring that the sleepers move with the rails even if the rail spikes are loose. As diagrammatically illustrated in Figure 1 the track is lifted by raising the slewing frame 17 about a rear pivot 21 by means of jacks 22 universally attached to shoes 23 bearing on the wheel peripheries. Reference systems such as light receivers 25, 27 and shadow boards 26, 28 are provided for vertical and horizontal alignment respectively. Control may be effected wholly by an operator but as shown in Figure 2 a single control lever 40 sequentially actuates (a) the rail clamps 24; (b) the lowering jacks 33 of the tamping heads; (c) the track-lifting jacks 22; (d) the ballast squeezing jacks 35; and (e) a switch 50 which brings the slewing jack 19 under the automatic control of the circuit 51 of the light receiver 27.
Patent GB-1272809-A (GB)
Title: Improvements in or relating to concealed printing
IPC: B41M5/04
Filed: 1969-08-26
Abstract: 1,272,809. Changeable printing. A. B. DICK CO. 26 Aug., 1969 [3 Sept., 1968], No. 42503/69. Heading B6C. A sheet is printed with a material which is colourless, but which reacts with a developing fluid to form a coloured mark. Between them the sheet, the image printed and the developing fluid comprise a material which becomes coloured in the presence of iodine, an oxidizing agent and an iodide capable of oxidation to produce iodine. Preferably the material which becomes coloured is incorporated in the sheet, e.g. in a coating, and is starch or polyvinyl alcohol or a mixture of starch and polyvinyl alcohol. The oxidizing agent may be in the sheet, and may be a colourless copper salt, such as the chloride, nitrate, sulphate, acetate, lactate, benzoate or stearate of copper, cupric potassium chloride, cupric ammonium chloride or copper m-benzene disulphonate. With the copper salt may be an amine selected from piperidine, piperazine, phenylenediamine, talluramine, trichlororomelamine, triisopropanolamine and melamine. Alternatively the oxidizing agent may be halogen oxidizing agent with a halogen attached to nitrogen, such as trichloromelamine, N - chlorosuccinimide, N - chlorophthalimide, monobromentin, diodantin, dibromethyl ethyl hydantoin, dichloromethylethyl hydantoin, N- bromoglutarimide, and N-haloaminotriazines. A copper salt and a halogen oxidizing agent may be used together. Preferably the sheet contains starch and/or polyvinyl alcohol and is printed with a material incorporating the oxidizing agent. An aqueous solution of potassium iodide, sodium iodide, ammonium iodide or lithium iodide, with or without an accompanying dyestuff, or an iodide-containing pencil or crayon, may be used to develop the printed image. The printed image may be applied by stencilling or silk screen printing, by letterpress printing, by lithography, by gravure printing or with a hand stamp, and the sheet printed may bear coloured images also. Sheets bearing both visible and invisible but developable images are stated to be usable in instructional material.
Patent GB-1057726-A (GB)
Title: Continuous production of carboxylic amides
Inventor: SCHOLZ HEINRICH
IPC: C07D213/72
Filed: 1963-10-29
Abstract: In a continuous process for preparing amides by reaction of esters with primary or secondary amines, the reactants are introduced into a column in which there is, both above and below the point of introduction, a countercurrent flow of ascending vaporous products and descending liquid products (the amide being withdrawn from a point below the supply point), and a temperature gradient increasing from top to bottom.  The esters are derived from C1- 4 acids and C1- 4 alcohols and the amines have 1-12 C atoms and may contain 1 or 2 OH groups or ether bridges; the column temperatures are not more than 260 DEG  C. at the bottom and at least 20 DEG  C. at the top.  A part only of the top product is removed at a minimum reflux ratio of 2: 1. Exemplified products are HCONMe2, HCONHEt, HCONEt2, HCONBu2, HCONH (cyclohexyl) and AcNHEt.
Patent GB-939222-A (GB)
Title: Improvements in or relating to circuit arrangements including two-state memory cells
IPC: G06F11/00
Filed: 1960-12-12
Abstract: 939,222. Circuits employing bi-stable magnetic elements. PHILIPS ELECTRICAL INDUSTRIES Ltd. Dec. 12, 1960 [Dec. 15, 1959], No. 42675/60. Class 40 (9). A first core 11 of a pair 11, 12 is re-set to a state 1 by coincident pulses from the output terminal of the second core 12 and from the setting terminal of core 12. If pulses occur cyclically at t1, t2, t3 as shown, the two cores act as a gate for pulses at instants t3, or as an AND element for sequential pulses p (t1 (reset 12) t2 (set 12, reset 11), t3 (set 11). The gate can be closed by pulse q at instant t 1  between instants t1 and t2. The output given by core 12 in response to pulse q is insufficient to set core 11 and the pulse at interval t2 has no effect on the core 12 already set. In Fig. 9, the feedback of a setting pulse from core 13 to core 14 enables the gate to be opened and closed by single pulses p and q at instants t1 of the cycle. Shift register, Fig. 10.-Cores are coupled in the manner shown in Fig. 8. Information is fed to core 20 on terminal 29 at instant t1. Information set in cores 20, 22, 24 is transferred to cores 21, 23, 25 by a pulse on terminal 30 at instant t2 and is stepped on to cores 22, 24, 20 by a pulse on terminal 31 at instant t4. A pulse on terminal 32 at instant t3 between instants t2 and t4 clears the register. When operating, the register gives outputs on terminals 26, 27, 28. Single core.-Each core 1, Fig. 1, has a reset winding 6, a set winding 7, a feedback winding 8 and a control winding 10 in the base circuit of a transistor 2 so arranged that the transistor aids the resetting operation started by a pulse on terminal 4 and is non-conductive during the setting operation. Two cores 1<SP>1</SP> and 1<SP>11</SP>, Fig. 12, may be combined with a single transistor 2 in one unit so that the same set windings 7, feedback windings 8, and control windings 10 are common to both cores. Each core has two set windings so arranged that a signal is required on both set windings on a core to set the core. Alarm circuits.-A break in a stream of pulses may be detected by the arrangement shown in Fig. 9 in combination with a slow-to-release relay (Figs. 14, 15, not shown).
Patent GB-1048761-A (GB)
Title: Improvements in or relating to the desiccation of biological matter
Inventor: MOISSET JEAN HECTOR EMILE
IPC: F26B3/00
Filed: 1961-11-29
Abstract: 1,048,761. Desiccating biological substances. LABORATOIRES DE RECHERCHES EXPERIMENTALES GOULDEN CIE. Dec. 31, 1962 [Nov. 29, 1961], No. 42686/61. Heading A2D. Physically and chemically fragile biological substances are desiccated with their active constituents being left substantially unchanged, by diffusion of water vapour through an artificial vapour-permeable enclosure around the substance consequent upon a removal of water vapour from the medium surrounding the enclosure, under ambient conditions of temperature and pressure, creating a vapour pressure difference as between the interior of the enclosure and the surrounding medium, proportioned quantities of the biological substance being brought into a condition permitting the flow of water vapour into the surrounding medium. When the surrounding medium is a confined atmosphere, the water vapour may be removed by means of a desiccating agent such as silica gel or calcium chloride. Alternatively, the water vapour in a circulating atmosphere may be removed by freezing. Hypophysis glands and other animal tissues, leaves of medicinal plants and other vegetable tissues, pumpkin seeds, and cytochrome and other opotherapic extracts may be desiccated. The enclosures may consist of sterile envelopes of "Cellophane" (Registered Trade Mark), paper bags, unglazed eathernware pots and porous Chamberlan filters.
Patent GB-1086265-A (GB)
Title: Curing of ethylene/vinyl chloride polymers
IPC: C08K3/06
Filed: 1964-10-20
Abstract: Ethylene/vinyl chloride copolymers are crosslinked by subjecting to a curing treatment in the presence of sulphur as curing agent and as stabilizer a polyol, phenol, bisphenol, urea, thiourea, dimethylol urea or epoxy compound. The copolymers may contain up to 15 weight per cent of other monomers.  The curing agent may be provided by elementary sulphur or a sulphur liberating compound such as bis(dimethylthiocarbamoyl) disulphide and tetrasulphide and homologues thereof, dipentamethylene tetrasulphide, 4,41-dithiodimorpholine, alkyl phenol sulphides, sulphur chloride, hydrogen sulphide and sulphur thiocyanate. Accelerators, e.g. 2-mercaptobenzothiazole, 2,21-dithiobenzothiazole, N - cyclohexyl - 2 - benzothiazolesulphenamide, zinc dimethyl dithiocarbamate, zinc diethyl dithiocarbamate, tetramethylthiuram disulphide, 1,3-diphenyl guanidine, butyraldehyde-aniline condensates, tellurium diethyl dithiocarbamate and selenium diethyl dithiocarbamate; and activators, e.g. stearic acid, antimony sulphide, caprylic acid, coconut fatty acids, diethanolamine, hydroxystearic acid basic lead carbonate, lead salicylate, oleic acid, p-quinone dioxime, ricinoleic acid, tetrachlorobenzoquinone, zinc palmitate, zinc stearate, lead carbonate, lead oxide or magnesium oxide may be present.  The polymers may be in the form of compositions with plasticizers, e.g. esters of phthalic, adipic, azelaic, oleic, fumaric and phosphoric acids; palm, rape, olive, linseed, castor, soya bean and tung oils; mineral rubbers; petroleum residues; asphalts; pine tar; paraffin wax; mineral and coal tar oils; naphthalenes; rosin; wool grease; carnauba and ceresin waxes; glycerol esters; coumarone, styrene and phenol/ formaldehyde resins; polyphenyls and chlorinated plyphenyls; chlorinated polyethylene and butyl rubber; and fillers, e.g. carbon black, wood flour, shell flour, cotton flock, sisal, chopped paper, macerated fabrics, synthetic fibres, keratin, lignin, soya bean meal, asbestos, mica, quartz, limestone, silica, clays, diatomaceous earth, fibrous glass, carborundum calcium carbonate, calcium silicate, alumina, zinc oxide, barium sulphate, titanium dioxide, talc, cork, iron oxide and zinc sulphide.  The crosslinked polymers may be used for moulding and in coatings and adhesives.
Patent GB-1133223-A (GB)
Title: Improvements in or relating to cop-winding devices
Inventor: MANEKSHAW ERACH MANEK NOWSHIRW
IPC: B65H54/14
Filed: 1965-10-09
Abstract: 1,133,223. Winding yarn. JAMES F. LOW & CO., Ltd. 10 Oct. 1966 [9 Oct., 1965], No. 42928/65. Headings D1D, D1F and D1J. A cop-winding machine has at least one rotatable vertical spindle, the upper stub end of which projects clear of any supporting bearing, a tapered roller adjustably disposed to one side of the stub end to shape a package being formed on the stub end, means to guide the yarn axially to and fro along the stub end, and a weight which in use rests on the package being formed and which moves vertically upwards as the package grows. The spindle is driven from a drive shaft through a clutch which is disengaged when the weight reaches a predetermined position, or on thread breakage by an arm supporting a jockey pulley pivoting. Disengagement of the clutch may cause a warning lamp to be switched on. The yarn guide is traversed axially of the stub end by a swing arm of adjustable length.
Patent GB-1503610-A (GB)
Title: Digital data transmission system
IPC: H04L27/38
Filed: 1975-10-20
Abstract: 1503610 Digital data detectors INTERNATIONAL BUSINESS MACHINES CORP 20 Oct 1975 [27 Dec 1974] 42953/75 Headings H4P and H4R Data represented by amplitude and phase modulation of quadrature carriers x k , x k  is detected by rotating the phase of the carriers in unit 14 by an estimated error angle -## k , so forming output signals and   (where k represents the sampling instant), comparing the rotated signal in decision logic 17 with coordinates α j , # j  representing all the possible modulation states stored in ROM 20, outputting on lines 21, 22 the co-ordinates α k , # k  most closely matching the received data for decoding 23 as output on line 9, generating at 26 a residual error signal ## k  representing the difference between the estimated rotation angle ## k  and the phase error of the detected data evaluated from y k , # k , α k  and # k , generating in predictive filter 32 a new estimated value of ## k  and converting 34 this value to cosine and sine functions on lines 35, 36 for use in the phase rotator 14. The error components #y k  and ## k  derived from logic 17 are rotated back through + ##<SP>k</SP> in unit 39 to form outputs #x k  and ## k  for adjusting an equalizer upstream of the data detecting circuitry and receiving the A/D converted transmission directly and through a Hilbert transform circuit. The decision logic 17 (detailed in Fig. 5, not shown) evaluates the squares of the differences between y k , # k  and all the ideal α j , # j  in turn and determines the minimum value of (y k -α j )<SP>2</SP>+(# k -# j )<SP>2</SP> (i.e. the smallest vector joining the vectors y k , # k  and α j , # j ) to gate as output the value α k , # k  correspondingly. The difference signals #y k  and ## k  are also made available at the same time for use in the predictive filter 32. The filter 32 is a cascade or parallel connection of two predictive filters respectively producing estimates of noise due to phase intercept and frequency shift, and to phase jitter and white noise. Both configurations operate by subtracting an estimate of phase error from the detected phase to produce a residual noise element which is used in the corresponding filter to update the estimate.
Patent GB-904588-A (GB)
Title: Improvements in and relating to aquarium filters
IPC: A01K63/04
Filed: 1960-12-15
Abstract: 904,588. Filters for aquaria. FOULDS, J. D. May 2, 1961 [Dec. 15, 1960], No. 43166/60. Class 46. A filter tray 1, Figs. 2 and 4, containing, e.g., layers of glass wool and granulated carbon 3, 4, Fig. 4, is fed with water and solids by an air lift pump 22, 18 from the bottom of an aquarium (not shown) and may be supported at various distances from the sides of the aquarium by brackets 10, Fig. 2, slidable in a slot 8, Figs. 2 and 4, and having flanges 16 which rest on the aquarium sides.
Patent GB-1069878-A (GB)
Title: Improvements relating to balances
Inventor: DEVERILL EDWARD ERNEST
IPC: G01G21/24
Filed: 1963-11-01
Abstract: 1,069,878. Weighing apparatus. STANTON INSTRUMENTS Ltd. Jan. 29, 1965 [Nov. 1, 1963], No. 43183/63. Heading G1W. In a beam balance in which a scale pan 5 attached to a support 4 is pivotally mounted above and at one end of a pivotally mounted beam 1, the support 4 is provided at its lower end with a bearing, part of which is guided in an arcuate track 11 disposed in such a way and having a radius of curvature equal to that of the locus described by the pan supporting pivot 3 as the beam 1 tilts that the pan 5 is maintained horizontal when loaded. The bearing comprises a part which is rotatably mounted by ball or roller races in or around a fixed part attached to the support 4, the rotatable part engaging the arcuate track 11 which is formed in one surface of a member 12 fixed to the base 13 of the balance. The fixed part may be a drum (7) Fig. 2 (not shown) in which case the rotatable part comprises an axle 9 having a track engaging end disc 10 or may be a rod in which case the movable part is a wheel (15) Fig. 3 (not shown) rotatably mounted at one end of the rod. Elongated slots 14 may be pro - vided on the support 4 and on the base 13 to facilitate screw adjustment of the positioning of the bearing and arcuate track 11 respectively.
Patent GB-1472417-A (GB)
Title: Rear view mirror assembly for automobiles
IPC: B60R1/06
Filed: 1975-10-06
Abstract: 1472417 Rear-view mirrors W A N ELLIS 6 Oct 1975 [7 Oct 1974] 43326/74 Heading B7J A rear-view mirror assembly has a spiral heating element embedded in the surface of the mirror to remove any condensation or ice, an electric motor being provided to rotate the assembly and disperse any rain drops.
Patent GB-1460008-A (GB)
Title: Oral inflation valves
IPC: F16K15/20
Filed: 1973-09-14
Abstract: 1460008 Valves LEAFIELDS ENG Ltd 28 Nov 1974 [14 Sept 1973] 43355/73 Heading F2V In an inflation valve a spring biased closure member 20 is free to tilt over a small angle to ensure a good seal with a seat 18. An enlarged head 24 on the closure member spindle 23 limits the degree of tilt. An elastomeric portion 21 of the closure member presents a continuous surface within the area bounded by the contact between the closure member and the seat so that any possible leakage is confined to the closure member and seat contacting surfaces. In a second embodiment, Fig. 3 (not shown) the closure member spindle depends from the contacting head of the closure member and in a third embodiment, Fig. 4 (not shown) generally as Fig. 3, the tilting movement of the spindle is limited by projections (30) within the body.
Patent GB-905768-A (GB)
Title: Improvements in a power and torque control system for gas turbine engines having free power turbines
IPC: F02C9/16
Filed: 1960-12-16
Abstract: 905,768. Automatic control systems for gasturbines. GENERAL ELECTRIC CO. Dec. 16, 1960 [Dec. 18, 1959], No. 43392/60. Class 38 (4). In a control system for a gas-turbine engine of the kind having a compressor in series fluid relationship with a free power output turbine, the product of a signal proportional to the temperature drop across the turbine and the mass flow rate through the turbine is derived and fed to a device which limits the fuel-flow rate to the engine when the product reaches a pre-selected value. As shown, a gas generator stage of the engine comprises a compressor 13, combustion chambers 14 and a turbine 15. The gases from the turbine 15, through a stator 17 drive a free power turbine 16 driving a shaft 21 through a gear-box 20. The temperature drop across the turbine 16 is sensed by thermocouples 31, 32 the outputs from which are applied in opposition to the input of an amplier 36. Across the output of the amplifier 36 is connected a potentiometer 29 having a slider 28 positioned by a bellows 25 responsive to the compressor discharge pressure at a Pitot 22. The compressor pressure is stated to be proportional to the mass air flow through a turbine stage when all the fluid discharged by the compressor flows through the turbine. The voltage between lines 37, 38 is proportional to the product of mass flow and turbine temperature drop and is stated to represent the power output from the free turbine 16 and is indicated by a voltmeter 39. A fuel control system for the engine is controlled by a bellows 27 responsive to the compressor pressure as modified by an orifice 26. The pressure drop across the orifice is partially determined by the discharge from a nozzle 54 which is restricted by a flapper 55. The position of the flapper is controlled by the relationship between the energization of a coil 59 and spring 60. The energization of the coil is dependent on the magnitude of the engine power signal voltage between lines 37, 38 and modifies the operation of the fuel control system so as to limit the power at a pre-selected level which is set by variation of the deadband X. A tachogenerator 40 is driven from the gear-box 20 and supplies a coil 45 of a torque-motor 41 which positions a slider 47 of a potentiometer 48 in dependence on the power turbine speed. The power signal between lines 37, 38 is applied across the potentiometer so that an ammeter 50 indicates the torque of the power-turbine. In a modification, the current through the ammeter 50 energizes the coil 59 so that the fuel control system is modified to limit the torque to a pre-selected limit. The current may be applied to a separate flapper assembly so that torque and power can be simultaneously limited.